"Pee-YAH-cuh head"
1.One who is acting in a stupid way, annoying you or being frustrating.
2. The bulbous head of a penis

Originally "peckerhead", but a certain incident involving a explicit question containing the words: "What? he got a big ol' peaka?" and bunch of gays who took that and over did it, it has morphed into this drawn out version. Used mostly in Tallahassee Florida, or by people from there.